Search found 12 matches

by Erika
Thu Aug 06, 2020 10:48 am
Forum: DBManager
Topic: Plant features
Replies: 1
Views: 7

Plant features

Hello, I need to compare the cooling effect of a facade greening with different species of plants so I have to create a new deciduous simple plant in DB Manager. Therefore I would like to know what parameters influences most the thermodynamical properties of a plant. For example, for the 3 facade gr...
by Erika
Fri May 15, 2020 2:50 am
Forum: Projects & Results & Ideas
Topic: Effect of greenings
Replies: 5
Views: 272

Re: Effect of greenings

Hi Tim, I have simulated several buildings and the result is still the same. I checked the water coefficient, it is equal to 1. I noticed that the value of the "greening:transpiration flux" reaches a maximum of 0.11 g/s*m3 but I don't know wether it is a normal value or not, as I didn't fi...
by Erika
Thu May 07, 2020 3:33 am
Forum: Projects & Results & Ideas
Topic: Effect of greenings
Replies: 5
Views: 272

Re: Effect of greenings

Hi Tim, I followed your advice and calculated the biometeorological indices UTCI and PET. However the results lead to the same conclusion, that is to say that the green facade leads to slighty higher temperatures regarding comfort. I know this isn't right so i'm trying to understand why I have those...
by Erika
Wed May 06, 2020 1:31 pm
Forum: LEONARDO 4
Topic: Negative mean radiant temperature
Replies: 3
Views: 60

Re: Negative mean radiant temperature

Hi Tim, Thank you for your reply. Actually the wall is built with 30 cm of default aluminium and the roof is made of 21 cm of default concrete cast dense. I also use a meteo file. I didn't think this could affect the result so much. Here is the link to the INX file and meteo file. https://we.tl/t-wz...
by Erika
Tue May 05, 2020 1:25 pm
Forum: LEONARDO 4
Topic: Negative mean radiant temperature
Replies: 3
Views: 60

Negative mean radiant temperature

Hello, I have a question about the Mean Radiant Temperature. I run a simulation of a simple building with Aluminium façades (see figure below) in order to study thermal comfort. When I look at the results on LEONARDO, I notice that the Mean Radiant Temperature is sometimes negative. What does a nega...
by Erika
Wed Apr 29, 2020 11:22 pm
Forum: Beginner's Corner
Topic: Impact of empty cells
Replies: 1
Views: 27

Impact of empty cells

Hi everyone, I need a little clarification about empty cells please. When digitazing with SPACES, it is recomended to let empty cells around the area. I know that I have to let, on each side, as many empty cells as the height of the highest building. However, I wonder if those empty cells can have a...
by Erika
Fri Mar 20, 2020 2:59 am
Forum: Projects & Results & Ideas
Topic: Effect of greenings
Replies: 5
Views: 272

Effect of greenings

Hello everyone, I'm struggling with the interpretation of a simulation result. I am trying to show the effect of greenings on air temperature by comparing the air temperature values right next to a concrete building facade, with and without greenings. Due to the theoretical notions I have, I expecte...
by Erika
Thu Mar 12, 2020 4:58 pm
Forum: Beginner's Corner
Topic: Functioning of Simple/Full forcing
Replies: 12
Views: 120

Re: Functioning of Simple/Full forcing

Hi Tim, Thank you for your reply. However I saw the value 18.4 °C in the attached excel file. Actually I just saw that I've made a mistake. The temperature I read is not 18.4°C but 21.3°C, i'm sorry. Nevertheless the problem is still the same. To obtain the excel file, I copied the text in the epw f...
by Erika
Thu Mar 12, 2020 1:57 pm
Forum: Beginner's Corner
Topic: Functioning of Simple/Full forcing
Replies: 12
Views: 120

Re: Functioning of Simple/Full forcing

Hi Tim,

Here are the epw file and a xy cut at z=2.25 m.
I could'nt attach them.

Thank you

https://we.tl/t-hvuMfnxR6q
by Erika
Thu Mar 12, 2020 1:31 pm
Forum: Beginner's Corner
Topic: Functioning of Simple/Full forcing
Replies: 12
Views: 120

Re: Functioning of Simple/Full forcing

Hello, I have a question about the simulation results with the full forcing option. I used a epw meteo file of 2050 on my model area below. On my meteo file, on june 23rd the temperature is 18.4 °C at 10 am while on my model area the temperature of the atmosphere and at the border is above 22.63°C. ...
by Erika
Mon Mar 09, 2020 4:04 pm
Forum: ENVI-met 4 (Main Simulation Model)
Topic: Nesting Grid Vs. Empty cells
Replies: 3
Views: 91

Re: Nesting Grid Vs. Empty cells

Hello,

I have the same issue with modelling a 400*500 area and I have a question relative to grid size.
Can it cause simulation problems to add empty cells (in tab tool) after digitizing ?

Thank you
by Erika
Mon Mar 09, 2020 2:05 pm
Forum: ENVI-met 4 (Main Simulation Model)
Topic: Simulation errors
Replies: 1
Views: 81

Simulation errors

Hi everyone, I got these simulation error messages and I don't know how to interpret them. Can anyone tell me what do they mean please ? 1. Calculating building envelope... ?? Building #1: FacadeSurface =0. Reset to A=4. ?? Building #11: FacadeSurface =0. Reset to A=4. ?? Building #24: FacadeSurface...

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